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- W2971714484 abstract "Background: Preventive therapies such as tamoxifen are a risk reduction option for women atincreased risk of breast cancer. Uptake of preventive therapies is low. The Self-RegulatoryFramework identifies the role of beliefs about medication and its impact on treatment decisionmaking. We examined whether women at increased risk of breast cancer can be categorised intogroups with similar medication beliefs and whether belief group membership was prospectivelyassociated with uptake of preventive therapy.Methods: Women (n =732) attending an appointment at one of 20 centres in England to discussbreast cancer risk were approached; 55.7% (408/732) completed a survey containing the Beliefsabout Medicines Questionnaire (BMQ) and the Perceived Sensitivity to Medicines (PSM)questionnaire. Self-reported uptake of tamoxifen at 3-month follow-up was reported in 258 (63.2%).The optimal number of medication belief groups were identified using Latent Profile Analysis (LPA).Results: Uptake of tamoxifen was 14.7% (38/258). The LPA model fit statistics supported a 2-groupmodel. Both groups held weak beliefs about their need for tamoxifen for current and future health.Group 2 (38% of the sample) reported stronger concerns about tamoxifen and medicines in general,and stronger perceived sensitivity to the negative effects of medicines compared with Group 1(62%). In a multivariable model, women classified into Group 2 (low need, higher concerns) weremore likely to be: aged ≥50 years (vs. 36–49 years), OR=0.56, 95% CI: 0.34–0.93, p=.024). Womenwith low necessity and lower concerns (Group 1) were more likely to initiate tamoxifen (18.3%; 33)than those with low necessity and higher concerns (Group 2) (6.4%; 5). After adjusting fordemographic and clinical factors, the OR was 3.37 (95% CI: 1.08 – 10.51, p = .036).Conclusions and implications: In this UK multi-centre study, uptake of breast cancer preventivetherapy was low. An important subgroup of women reported low need for preventive therapy andstrong medication concerns. These women were less likely to initiate tamoxifen. Understandingsubgroup differences in medication beliefs may enable the development of personalisedinterventional approaches for supporting informed treatment decision-making." @default.
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- W2971714484 date "2019-03-06" @default.
- W2971714484 modified "2023-09-23" @default.
- W2971714484 title "Medication beliefs predict uptake of preventive therapy in women at increased risk of breast cancer: a Latent Profile Analysis (Abstract only)" @default.
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